Last week automakers reported sales of 15.3 million, up from a low of 9.0 million in February 2009. The rise is due in part to ultra-low interest rates, but also to both a rapidly aging fleet and longer loan terms. The average age of a car is now 11.2 years, up from 8.4 in 1995, while the average term of a new car loan is 65 months.